How to Use Default Parameters

Steps

1. Paste the code into a Swift file or playground.
2. Run it once to verify the output.
3. Adjust the inputs to match your use case.

Copy and paste

import Foundation

func greet(name: String, punctuation: String = "!") {
    print("Hello, (name)(punctuation)")
}

greet(name: "Ava")
greet(name: "Liam", punctuation: "!!!")

Notes

• Keep functions small and focused for reuse.
• Prefer safe APIs like optionals and guards.